Jason Dunaway Takes the Helm as President of Day & Zimmermann Maintenance and Construction

Jason Dunaway's New Role at Day & Zimmermann

In a significant leadership transition, Jason Dunaway has been named President of Day & Zimmermann's (D&Z) Maintenance and Construction division, effective January 19, 2026. This family-owned company, renowned for its 125-year legacy in construction, engineering, staffing, and defense solutions, is now poised for further advancements under Dunaway's leadership, who previously served as Executive Vice President of Operations.

Dunaway steps into this crucial role at a time when D&Z is focusing on expanding its reputation as a trusted maintenance partner to becoming a comprehensive engineering, procurement, and construction (EPC) service provider. This effort centers on maintaining a commitment to safety, reliability, and exceptional value for customers—qualities that D&Z has continually prioritized.

Hal Yoh, Chair and CEO of D&Z, remarked on Dunaway's exemplary career, highlighting his impressive leadership skills and innovative approach to managing complex projects and diverse teams. "Jason has always had a knack for recognizing and seizing new market opportunities, balancing short-term objectives with a long-range strategic vision," Yoh emphasized. This newfound role allows Dunaway to further hone these skills, providing a pathway for significant growth while maintaining a customer-first philosophy.

Dunaway’s tenure at D&Z has been marked by operational efficiency, forging strong relationships with stakeholders across all regions. His commitment goes beyond immediate business goals, as he invests in developing the next generation of leaders, fostering talent, and embedding a culture of excellence within the organization.

Moreover, in recognition of his expertise, Dunaway was appointed to the White House’s Nuclear Power Project Management and Delivery Working Group in 2024. This role allowed him to contribute insights into effective project implementation and foster connections with the nation’s skilled craftsmanship workforce.

When announcing his promotion, Dunaway expressed his enthusiasm, stating, "I'm honored to begin this new chapter with the D&Z Maintenance and Construction team and excited to build on the strong foundation John McCormick set in motion. We’re well-positioned for continued growth, and I’m committed to leading our next phase with safe and disciplined execution, empowered teams, and an unwavering customer focus."

Jason Dunaway succeeds John McCormick, who is set to retire on January 16 after five impactful years as President of the division and over eight with D&Z overall. McCormick has been a pivotal figure, steering the Maintenance and Construction division toward remarkable growth, culminating in record achievement during 2024 and 2025. His seasoned career, stretching over four decades in power and industrial sectors, leaves behind a noteworthy legacy of transforming the organization and advocating for safety—a sentiment echoed in many tributes paid to him.

D&Z's Maintenance and Construction division plays a vital role in enabling customers in power and industrial markets to optimize their performance. The team procures and deploys a comprehensive range of services, including maintenance, construction, engineering, and technical assistance. The division is celebrated for its Maintenance and Modification capabilities while also providing multidiscipline EPC services, vital for executing large-scale, design-build projects successfully.

As one of the leading employers in the craft sector, D&Z is committed to offering long-term, fulfilling careers for skilled professionals dedicated to delivering high-quality work. Day & Zimmermann demonstrates a relentless pursuit of innovation across its extensive service offerings, propelling operational and safety enhancements that define industry standards.

In summary, Dunaway's new leadership role marks a vibrant future for Day & Zimmermann, focusing on strategic expansions while reinforcing the company’s foundational principles of safety and quality. As the organization transitions into this new era under his vision, the commitment to exceptional service and communal growth remains unshaken.